Progress in Photovoltaics最新文献

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An Updated Simplified Energy Yield Model for Recent Photovoltaic Module Technologies 最新光伏组件技术的更新简化能量产出模型
IF 8 2区 材料科学
Progress in Photovoltaics Pub Date : 2025-05-20 DOI: 10.1002/pip.3926
Anatoli Chatzipanagi, Nigel Taylor, Ismael Medina Suarez, Ana M. Martinez, Teodora S. Lyubenova, Ewan D. Dunlop
{"title":"An Updated Simplified Energy Yield Model for Recent Photovoltaic Module Technologies","authors":"Anatoli Chatzipanagi,&nbsp;Nigel Taylor,&nbsp;Ismael Medina Suarez,&nbsp;Ana M. Martinez,&nbsp;Teodora S. Lyubenova,&nbsp;Ewan D. Dunlop","doi":"10.1002/pip.3926","DOIUrl":"https://doi.org/10.1002/pip.3926","url":null,"abstract":"<p>The European Commission's Photovoltaic Geographic Information System (PVGIS) uses a simplified solar energy yield model to provide quick and reliable data on the potential performance of photovoltaic (PV) systems. This study looks at the recalibration of the model for modern module technologies, using power matrix datasets produced by the European Solar test Installation (ESTI) for seven crystalline silicon (cSi), two cadmium telluride (CdTe) and three copper indium diselenide (CIS) modules. The results show that the PVGIS power performance model with updated coefficients can provide a good description of the power output of the modern crystalline silicon (cSi) modules, with a mean absolute bias error (MABE) of less than 1% in almost all cases, against an MABE of over 3.5% with the current coefficients. The updated coefficients allow the model to better capture the improved temperature coefficients and low light performance. As a result, there will be a slight increase in the energy yield estimates. For the thin film technologies, the updated coefficients allow for a more accurate description of current data sets, but more data for modules from recent production series would be desirable to further increase the model's applicability.</p>","PeriodicalId":223,"journal":{"name":"Progress in Photovoltaics","volume":"33 8","pages":"905-917"},"PeriodicalIF":8.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pip.3926","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144647797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Boosting the Performance of Carbon-Based Hole-Transport-Layer-Free CsPbI2Br Solar Cells by Adding Imidazole Small Molecules 咪唑小分子提高碳基无空穴传输层CsPbI2Br太阳能电池性能
IF 7.6 2区 材料科学
Progress in Photovoltaics Pub Date : 2025-05-10 DOI: 10.1002/pip.3924
Hai Liu, Xueyan Ma, Wenxuan Li, Guodong Wan, Xiaoyang Liu, Yali Li, Yujun Fu, Deyan He, Junshuai Li
{"title":"Boosting the Performance of Carbon-Based Hole-Transport-Layer-Free CsPbI2Br Solar Cells by Adding Imidazole Small Molecules","authors":"Hai Liu,&nbsp;Xueyan Ma,&nbsp;Wenxuan Li,&nbsp;Guodong Wan,&nbsp;Xiaoyang Liu,&nbsp;Yali Li,&nbsp;Yujun Fu,&nbsp;Deyan He,&nbsp;Junshuai Li","doi":"10.1002/pip.3924","DOIUrl":"https://doi.org/10.1002/pip.3924","url":null,"abstract":"<div>\u0000 \u0000 <p>Carbon-based hole-transport-layer (HTL)-free CsPbI<sub>2</sub>Br solar cells have attracted considerable interest due to the improved stability, simple structure, rich application scenarios, and low cost, as compared with their organic–inorganic hybrid counterparts. However, the uncoordinated Pb<sup>2+</sup> and mobile I<sup>−</sup> ions impose challenges for fabricating a cell with good comprehensive performance. To address the related issues, herein, we introduce a facile additive strategy using an organic small molecule material, i.e., 1H-imidazole-4-carboxylic acid (ICA), to improve the comprehensive performance of carbon-based HTL-free CsPbI<sub>2</sub>Br solar cells. Benefitting from the effective passivation of Pb<sup>2+</sup> and anchoring of I<sup>−</sup>, as well as the increased crystallinity and reduced surface roughness of the CsPbI<sub>2</sub>Br layers by ICA, the optimal cell delivers a power conversion efficiency (PCE) of 14.71%, ⁓24.7% increment relative to the PCE of 11.80% for the control device without ICA addition. Moreover, the ICA-added device exhibits evidently reduced hysteresis of the current–voltage characteristics and notably enhanced stability, in contrast to the control device.</p>\u0000 </div>","PeriodicalId":223,"journal":{"name":"Progress in Photovoltaics","volume":"34 2","pages":"171-179"},"PeriodicalIF":7.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145969864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photostable Inorganic Perovskite Absorber via Thermal Evaporation for Monolithic Perovskite/Perovskite/Silicon Triple-Junction Solar Cells 单片钙钛矿/钙钛矿/硅三结太阳能电池的热蒸发光稳定无机钙钛矿吸收剂
IF 8 2区 材料科学
Progress in Photovoltaics Pub Date : 2025-05-08 DOI: 10.1002/pip.3923
Yashika Gupta, Minasadat Heydarian, Maryamsadat Heydarian, Oussama Er-raji, Michael Günthel, Oliver Fischer, Clemens Baretzky, Patricia S. C. Schulze, Martin Bivour, Stefaan De Wolf, Stefan W. Glunz, Juliane Borchert
{"title":"Photostable Inorganic Perovskite Absorber via Thermal Evaporation for Monolithic Perovskite/Perovskite/Silicon Triple-Junction Solar Cells","authors":"Yashika Gupta,&nbsp;Minasadat Heydarian,&nbsp;Maryamsadat Heydarian,&nbsp;Oussama Er-raji,&nbsp;Michael Günthel,&nbsp;Oliver Fischer,&nbsp;Clemens Baretzky,&nbsp;Patricia S. C. Schulze,&nbsp;Martin Bivour,&nbsp;Stefaan De Wolf,&nbsp;Stefan W. Glunz,&nbsp;Juliane Borchert","doi":"10.1002/pip.3923","DOIUrl":"https://doi.org/10.1002/pip.3923","url":null,"abstract":"<p>Monolithic perovskite/perovskite/silicon triple-junction solar cells have the potential to exceed the efficiency limits of perovskite/silicon dual-junction solar cells. However, the development of perovskite/perovskite/silicon triple-junction technology faces several significant hurdles, including the development and integration of a stable high bandgap perovskite absorber into the monolithic structure. Key issues include light-induced halide segregation in mixed halide high bandgap perovskites and the risk of solvent damage to underlying layers during top-cell deposition. To overcome these challenges, we developed a high bandgap, inorganic perovskite absorber, CsPbI<sub>2</sub>Br, using thermal evaporation at room temperature, eliminating the need for post-deposition annealing. The resulting perovskite films exhibited a bandgap of 1.88 eV and demonstrated good photostability without any signs of halide segregation under continuous illumination probed over 3 h. Additionally, thermal evaporation offers a scalable approach for large-scale production, further enhancing the potential for widespread adoption of this technology. This advancement enabled the incorporation of CsPbI<sub>2</sub>Br perovskite films into a monolithic perovskite/perovskite/silicon triple-junction device as the top-cell absorber. Consequently, we developed the first triple-junction device with an all-inorganic perovskite top-cell absorber using the thermal evaporation technique, achieving an efficiency of 21%, with an open-circuit voltage of 2.83 V over an active area of 1 cm<sup>2</sup>. The device underwent 100 h of fixed voltage measurement near maximum power point under ambient conditions without encapsulation. Remarkably, it not only withstood the measurement but also exhibited an improved efficiency of ~22% afterwards, further demonstrating the stability and reliability of our thermally evaporated CsPbI<sub>2</sub>Br perovskite absorber-based inorganic solar cell for monolithic triple-junction perovskite/perovskite/silicon applications.</p>","PeriodicalId":223,"journal":{"name":"Progress in Photovoltaics","volume":"33 7","pages":"782-794"},"PeriodicalIF":8.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pip.3923","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photovoltaics Literature Survey (No. 199) 光伏文献综述(第199期)
IF 8 2区 材料科学
Progress in Photovoltaics Pub Date : 2025-05-07 DOI: 10.1002/pip.3918
Ziv Hameiri
{"title":"Photovoltaics Literature Survey (No. 199)","authors":"Ziv Hameiri","doi":"10.1002/pip.3918","DOIUrl":"https://doi.org/10.1002/pip.3918","url":null,"abstract":"","PeriodicalId":223,"journal":{"name":"Progress in Photovoltaics","volume":"33 6","pages":"726-732"},"PeriodicalIF":8.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Light-Soaking Effects in High-Efficiency Cu(In,Ga)Se2 and (Ag,Cu)(In,Ga)Se2 Solar Cells 高效Cu(in,Ga)Se2和(Ag,Cu)(in,Ga)Se2太阳能电池的吸光效应
IF 8 2区 材料科学
Progress in Photovoltaics Pub Date : 2025-05-04 DOI: 10.1002/pip.3912
Klara Kiselman, Jan Keller, Patrick Pearson, Kostiantyn Sopiha, Erik Wallin, Marika Edoff
{"title":"Light-Soaking Effects in High-Efficiency Cu(In,Ga)Se2 and (Ag,Cu)(In,Ga)Se2 Solar Cells","authors":"Klara Kiselman,&nbsp;Jan Keller,&nbsp;Patrick Pearson,&nbsp;Kostiantyn Sopiha,&nbsp;Erik Wallin,&nbsp;Marika Edoff","doi":"10.1002/pip.3912","DOIUrl":"https://doi.org/10.1002/pip.3912","url":null,"abstract":"<p>Metastable behaviours with respect to light-soaking of Cu(In,Ga)Se<sub>2</sub> (CIGS) solar cells have long been known and studied, but no explanation has yet been fully agreed on. In this study, silver alloying and its impact on light-soaking effects is explored in four CIGS and six (Ag,Cu)(In,Ga)Se<sub>2</sub> (ACIGS) samples with high efficiency (17% to 21% before light-soaking). All were produced by co-evaporation and similar depositions protocols as the current world record device but with some variation. A variety of opto-electronic characterisation methods were used to explore the response to 24 h of light-soaking at 50°C. We found that (i) the open-circuit voltage increased for all ACIGS devices but decreased for the CIGS devices, (ii) the cells entered a state with higher doping and more tail states, and (iii) the effect was metastable and partially reverted after dark storage. While the improvement of the ACIGS cells saturates after 24 h in one-third of the irradiance at one sun, months are needed to reverse the open-circuit voltage change. Despite a higher doping after light-soaking, none of the samples' short-circuit current showed significant changes and the efficiency after light-soaking ranged from 15% to 22%. No long-range change in sodium or rubidium distributions was observed using glow-discharge optical emission spectroscopy. In general, external radiative efficiency measurements showed that the nonradiative recombination loss is reduced after light-soaking in the ACIGS devices. However, the correlation to the measured voltage was not always straight forward, presumably due to the graded bandgap of the absorber.</p>","PeriodicalId":223,"journal":{"name":"Progress in Photovoltaics","volume":"33 7","pages":"735-746"},"PeriodicalIF":8.0,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pip.3912","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Higher-Efficiency TOPCon Solar Cells in Mass Production Enabled by Laser-Assisted Firing: Advanced Loss Analysis and Near-Term Efficiency Potential 通过激光辅助烧制实现大规模生产的高效率TOPCon太阳能电池:先进的损耗分析和近期效率潜力
IF 8 2区 材料科学
Progress in Photovoltaics Pub Date : 2025-05-01 DOI: 10.1002/pip.3921
Xutao Wang, Jing Yuan, Xinyuan Wu, Jianjun Nie, Yanyan Zhang, Xiaoyan Zhang, Weiguang Yang, Feng Li, Bram Hoex
{"title":"Higher-Efficiency TOPCon Solar Cells in Mass Production Enabled by Laser-Assisted Firing: Advanced Loss Analysis and Near-Term Efficiency Potential","authors":"Xutao Wang,&nbsp;Jing Yuan,&nbsp;Xinyuan Wu,&nbsp;Jianjun Nie,&nbsp;Yanyan Zhang,&nbsp;Xiaoyan Zhang,&nbsp;Weiguang Yang,&nbsp;Feng Li,&nbsp;Bram Hoex","doi":"10.1002/pip.3921","DOIUrl":"https://doi.org/10.1002/pip.3921","url":null,"abstract":"<p>The tunnel oxide passivated contact (TOPCon) solar cell is predicted to dominate the photovoltaic market from the year 2024. The TOPCon efficiency is steadily increasing both in the lab and high-volume production. A notable new manufacturing technology, laser-assisted firing, has been shown to enhance the power conversion efficiency (<i>PCE</i>) of TOPCon solar cells. This enhanced contact firing technique includes a traditional co-firing step, followed by a laser scanning process in conjunction with an applied reverse bias. In this work, we utilize the Jolywood Special Injected Metallization (JSIM), a laser-assisted firing process developed by Jolywood that is already used in high-volume production. The performance of cells from the JSIM process was evaluated by comparing them to the cells fabricated using the baseline (BL) single-step firing process. The JSIM solar cells exhibited a notably higher <i>PCE</i>, approximately 0.58%<sub>abs</sub> greater, compared with the BL cells. Detailed characterization demonstrated that the front (~280 fA/cm<sup>2</sup>) and rear (~98 fA/cm<sup>2</sup>) contact recombination of baseline (BL) cells are higher than those of JSIM cells (~88 fA/cm<sup>2</sup> and ~21 fA/cm<sup>2</sup>, respectively), which is also the main advantages of the JSIM technology. Quokka 3 simulations were utilized to quantify the impact of the various improvements on the final solar cell performance. With the utilization of JSIM technology, contact recombination is no longer the primary source of power loss across the cell. Finally, the simulated results illustrated that the <i>PCE</i> of industrial JSIM cells could further be enhanced by ~0.3%<sub>abs</sub> through optimizing the front screen pattern. This work clearly demonstrates the feasibility of laser-assisted firing in high-volume production, enabling significantly higher efficiency TOPCon solar cells by significantly reducing silicon-metal recombination. Consequently, laser-assisted firing increases the practical efficiency limit of TOPCon solar cells, bringing them close to levels that were previously only envisioned for heterojunction silicon solar cells.</p>","PeriodicalId":223,"journal":{"name":"Progress in Photovoltaics","volume":"33 7","pages":"771-781"},"PeriodicalIF":8.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pip.3921","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancing the Efficiency and Stability of CsFA-Based Perovskite Solar Cells: Defect Passivation Using Indoline-Based D–π–A Configured Molecule as Additive 提高csfa钙钛矿太阳能电池的效率和稳定性:用吲哚基D -π-A构型分子作为添加剂进行缺陷钝化
IF 7.6 2区 材料科学
Progress in Photovoltaics Pub Date : 2025-04-25 DOI: 10.1002/pip.3920
Zaixin Zhang, Yongjie Cui, Gongcheng Chen, Hang Zhou, Xin Wang, Jingyao Feng, Yongzhen Wu, Wenjun Wu, Wenqin Li, Zihua Wu, Huaqing Xie
{"title":"Enhancing the Efficiency and Stability of CsFA-Based Perovskite Solar Cells: Defect Passivation Using Indoline-Based D–π–A Configured Molecule as Additive","authors":"Zaixin Zhang,&nbsp;Yongjie Cui,&nbsp;Gongcheng Chen,&nbsp;Hang Zhou,&nbsp;Xin Wang,&nbsp;Jingyao Feng,&nbsp;Yongzhen Wu,&nbsp;Wenjun Wu,&nbsp;Wenqin Li,&nbsp;Zihua Wu,&nbsp;Huaqing Xie","doi":"10.1002/pip.3920","DOIUrl":"https://doi.org/10.1002/pip.3920","url":null,"abstract":"<div>\u0000 \u0000 <p>The employment of rationally designed functional group-bearing molecules as additives to passivate perovskite defects has emerged as a prevalent trend. Among the diverse array of passivation materials, donor-π-acceptor (D-π-A) structured molecules have attracted widespread attention due to their unique ability of simultaneously regulate the electron donor and acceptor units, thereby promoting coordination with undercoordinated ions of perovskite films. In this work, we introduce an indoline-based D-π-A molecule (labeled as IHT) as an efficient passivator for perovskite solar cells (PSCs). The extraordinary electron-donating capability of indoline moiety simultaneously endows the electron-withdrawing cyanoacetic acid group with an elevated electron density, which is in favor of interaction with under-coordinated Pb<sup>2+</sup> in the lattice, thus reducing the density of defective states within the perovskite films. Experimental outcomes underscore the efficacy of IHT as an additive in passivating CsFA-based PSCs. The optimal devices demonstrate a remarkable champion photovoltaic conversion efficiency of 21.25%, with a notable improvement of 7.4% compared to the Cs-FA-PbI<sub>3</sub> devices. The stability assessments reveal that the unencapsulated IHT-treated Cs-FA-PbI<sub>3</sub> devices retained 83% of the initial efficiency after 30 days in ambient air, whereas the untreated devices exhibited a decline to 54% under the same condition. This work indicates the profound significance of IHT in promoting the formation of dense perovskite film with passivation effect as well as enhancing the long-term stability of PSCs.</p>\u0000 </div>","PeriodicalId":223,"journal":{"name":"Progress in Photovoltaics","volume":"34 2","pages":"161-170"},"PeriodicalIF":7.6,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145969949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improved Robustness Against Thermal Stress for Building-Integrated PV Modules Built on Aluminum Façade Elements 改进的抗热应力的坚固性:基于铝制面板的建筑集成光伏组件
IF 8 2区 材料科学
Progress in Photovoltaics Pub Date : 2025-04-23 DOI: 10.1002/pip.3915
Wiebke Wirtz, Kevin Meyer, Rolf Brendel, Henning Schulte-Huxel
{"title":"Improved Robustness Against Thermal Stress for Building-Integrated PV Modules Built on Aluminum Façade Elements","authors":"Wiebke Wirtz,&nbsp;Kevin Meyer,&nbsp;Rolf Brendel,&nbsp;Henning Schulte-Huxel","doi":"10.1002/pip.3915","DOIUrl":"https://doi.org/10.1002/pip.3915","url":null,"abstract":"<div>\u0000 \u0000 <p>The combination of materials from the photovoltaics (PV) industry and the building industry is often a challenge for building-integrated PV (BIPV). In this work, we combine typical materials for PV module manufacturing with aluminum, a common façade material. We build BIPV modules with crystalline silicon solar cells by directly laminating the solar cell strings on aluminum façade elements. Silicon and aluminum differ twice as much in thermal expansion coefficients than silicon and glass do. This induces high mechanical stress in the BIPV modules when the temperature varies during processing or operation. As a consequence, copper wires interconnecting the silicon solar cells might be ripped off the solar cells or even break. This work analyzes the degradation behavior of such BIPV modules with aluminum sheets on the rear side under variations in temperature. Horizontal crimps in the interconnectors in between the solar cells reduce thermal stresses and prevent the interconnectors from ripping off. Therefore, the horizontal crimps improve the reliability of BIPV modules built on aluminum façade elements. The relative remaining module power after 200 thermal cycles between −40°C and +85°C increases from 92.2% without horizontal crimps to 97.8% with strain relief by horizontal crimps for BIPV modules made of 10 half-cut silicon solar cells that are directly laminated on aluminum sheets.</p>\u0000 </div>","PeriodicalId":223,"journal":{"name":"Progress in Photovoltaics","volume":"33 6","pages":"717-725"},"PeriodicalIF":8.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Subcell-Resolved EQE Method Using Reverse Voltage Biasing for Multijunction Photovoltaics With Overlapping Subcell Absorptance 基于反向电压偏置的亚电池分解EQE方法用于具有重叠亚电池吸收的多结光伏
IF 8 2区 材料科学
Progress in Photovoltaics Pub Date : 2025-04-21 DOI: 10.1002/pip.3914
Meghan N. Beattie, Michael Schachtner, Gerald Siefer, David Lackner, Oliver Höhn, Karin Hinzer, Henning Helmers
{"title":"Subcell-Resolved EQE Method Using Reverse Voltage Biasing for Multijunction Photovoltaics With Overlapping Subcell Absorptance","authors":"Meghan N. Beattie,&nbsp;Michael Schachtner,&nbsp;Gerald Siefer,&nbsp;David Lackner,&nbsp;Oliver Höhn,&nbsp;Karin Hinzer,&nbsp;Henning Helmers","doi":"10.1002/pip.3914","DOIUrl":"https://doi.org/10.1002/pip.3914","url":null,"abstract":"<p>External quantum efficiency (EQE) measurements of individual subcells in multijunction photovoltaic devices are essential to evaluate current matching and to iterate the design process. The standard light biasing technique used to measure subcell EQE falls short when multiple subcells absorb within the same spectral region. In this work, we demonstrate a three-step reverse voltage biasing EQE method, which measures any number of subcells with overlapping absorptance: (1) A light bias is applied to generate current mismatch between the subcells. (2) Current–voltage (<i>I–V</i>) characteristics are measured into reverse bias, where the limiting subcell enters reverse-bias breakdown and the device current climbs to a plateau at the photocurrent of the next limiting subcell, producing a staircase <i>I–V</i> curve. (3) Each subcell EQE curve is measured using a voltage bias within its current plateau. We demonstrate this approach for a two-junction GaAs-based photonic power converter, comparing to the standard light biasing method and revealing better than 0.8% absolute agreement when the top junction is preferentially biased in the reverse voltage biasing method. We demonstrate the viability of the method by measuring the EQE of all subcells in a six-junction GaAs-based photonic power converter.</p>","PeriodicalId":223,"journal":{"name":"Progress in Photovoltaics","volume":"33 7","pages":"747-756"},"PeriodicalIF":8.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pip.3914","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Top-Cell Ohmic Shunt Imaging in 2-Terminal Tandem Solar Cells by Differential Electroluminescence 差分电致发光在2端串联太阳能电池中的顶电池欧姆分流成像
IF 8 2区 材料科学
Progress in Photovoltaics Pub Date : 2025-04-21 DOI: 10.1002/pip.3916
Joël Wyttenbach, Muriel Matheron
{"title":"Top-Cell Ohmic Shunt Imaging in 2-Terminal Tandem Solar Cells by Differential Electroluminescence","authors":"Joël Wyttenbach,&nbsp;Muriel Matheron","doi":"10.1002/pip.3916","DOIUrl":"https://doi.org/10.1002/pip.3916","url":null,"abstract":"<div>\u0000 \u0000 <p>Perovskite/silicon tandem photovoltaic cells promise higher energy conversion efficiencies than silicon single junctions for reasonable additional production cost. However, they are more complex, due to the increased number of layers and to the perovskite material features regarding kinetic, stability, and surface homogeneity. Although measuring each subcell independently from each other is still a challenge, this work introduces a novel quantified electroluminescence (EL) imaging method of the top-cell ohmic shunt, a major issue in perovskite stacks. Device modeling, validated by experiments, led to ohmic shunt 2D resolution from differential EL measurements around 0.7 V, without optical filtering or spectral resolution. The shunt resistance maps of more than 60 cells were characterized, and the shunt quantification from these maps was consistent with electrical measurements. These maps provide relevant clues regarding ohmic defect origin by showing their strength, shape, and location. Applications range from lab-scale performance improvement and aging monitoring to manufacturing control including encapsulation.</p>\u0000 </div>","PeriodicalId":223,"journal":{"name":"Progress in Photovoltaics","volume":"33 7","pages":"757-770"},"PeriodicalIF":8.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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